I've run RFT front / non RFT rears all of this year. Including:
2x E90post driving meets
1x Santa pod
1x Bedford Autodrome Open Pitlane
1x Silverstone Open Pitlane.
It has caused me no problem whatsoever. Anyone that says it's terrible obviously has no experience and is just copy pasting something someone else said! Simple as.
Think of it this way.
RFTs have lower grip than non RFTs assuming you buy a good one. That is given.
So what is better:
4x RFT (no grip x 4)
2x RFT (no grip x 2)
0x RFT (no grip x 0)
Obviously, in an ideal world you'll change front and back. But. Changing just the back will clearly give you more performance than being on full run flats.
The tramlining will also decrease, and bumps will feel less harsh.
As soon as you can, get the other runflats moved over too. Mine have a couple k left on them now and will then be dumped for a pair of Contisport 5Ps to match the rear - which I've had waiting to go on a couple months.
This OBVIOUSLy only accounts for having the same wheels on each axle. If you do something mental like make left non rft and right rft, then enjoy your accident.
Previously: 2003 Peugeot 206 1.6 8v | 2006 E90 320d M-Sport, 19" BBS CH, Full Ice-cold JL audio install, August 2010 Total BMW 6 page feature car. | 2003 Nissan 350Z GT Coupe 286BHP
Now:2010 E92 LCI 335d M-Sport